Glazing-machine



W. R. SOPER.

G LAZING MACHINE.

APPLICATION FILED JUNE 28, 1917.

Patented May 3, 1921.

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APPLICATION FILED JUNE28| I917.

1,376,473. Pdtented May 3,, 1921.1,

W. R. SUPER.

GLAZING MACHINE.

APPLICATION FILED IUNEZB, I9I7- v Patented May 3, 1921.

3 SHEETS-SHEET 3.

65 7 74 Q I? J6 AM a 68 7E 7E 1 UNITED STATES PATENT 'OFFlQZZ.

WALTER R. SUPER, OF LYNN. MASSACHUSETTS, ASSIGNOR- T ASSOCIATED TANNERS MACHINERY 00., A CQRPORATION OF MASSACHUSETTS.

GLA ZING-MACHINE.

Application filed June 28, 1917.

To all whom it may concern:

Be it known that I, VALTER R. SornR, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented new and useul Improvements in Glazing-Machines, of which the following is a specification.

This invention relates to improvements in machines for glazing the surface of leather or like material.

The object of the invention is to provide a powerful and durable machine for the purpose described, having a work support capable of being adjusted at different angles so as to vary the pressure of the work member against the surface of the work at predetermined sections of said work.

Another object of the invention is to provide means for elevating and maintaining said work support in its elevated position during the operation of the machine.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims.

Referring to the drawings:

Figure 1 is a front elevation of a machine embodying my invention.

Fig. 2 is aside elevation of the same, portions of the frame being broken away to more clearly illustrate the parts at the rear of said frame.

Fig. 3 is a detail view of the work support and its elevating and locking means with the parts thereof shown in the positions which they occupy when the work support is in its lowermost position, one of the frames thereof being removed to more clearly illustrate the mechanism located therebehind.

Fig. is a vertical section through the work member, work member holder and head.

Fig. 5 is a section taken on the line 55 of Fig. 4.

Like numerals refer to like parts throughout the several views of the drawings.

The drawings represent a machine consisting of two working elements including work members 1 and 2 arranged to ope ate independently upon work secured to their respective work supports 3 and 4. The construction and operation of these two elements are substantially identical with the exception of the timing thereof which is Specification of Letters Patent.

Patented May 3, 1921.

Serial No. 177,565.

varied because of the fact that the Work members of said elements are operated by cranks 5 and 6 respectively which are secured to opposite ends of a common driving shaft 7 in order to economize in space and parts, and furthermore the cranks 5 and 6 are disposed substantially at 180 apart in order to balance each other and thereby eliminate vibration.

The machine preferably has two metal side frames 8 and 9 secured to a base 10 with a space'between said frames sufficient to permit access to both sides of each of the machine elements. Mounted upon said base 10 outside of each of said frames is a pair of smaller frames 11 and 12 bearing the work supports.

Pivotally mounted between the frames 11 and 12 are rocker frames 13 and 14, preferably consisting of bell crank levers attached respectively to shafts 15 and 16 journaled to rock in bearings in said frames 11 and 12. The frames 13 and 14 have arms 17, preferably projecting forward and pivotally attached at 18 to brackets 19. The brackets 19 have upwardly disposed cars 20 which support shafts 21, the axes thereof being disposed at right angles, to the axes of the pivots 18 and substantially parallel with the surface of the work support for which they serve as pivots.

Between the ears 20, 20 are arranged ears 22 which project downwardly from brackets 26 secured to the under side of the work support 25 which is preferably formed of wood. The ears 22 are made narrower than the space between the cars 20 for the purpose of permitting longitudinal movements thereof on the shaft 21 when the rocker frames and 14 are rocked about their pivots. The pivotal connection, consisting of the ears 20 and 22, together'with the shaft 21, permit the work support connected thereby to the arms 13and 14 to be rocked transversely to vary the pressure of the workmemberupon one side or the other of said work support.

To maintain the work support at the desired angle in said transverse direction-one of the brackets 19, preferably the forward one,.is provided with lugs 23 containingadjusting screws 24-, which are two in number, said screws being arranged upon opposite sides of the shaft 21 so as to provide a positive positioning means for the work support. Means are provided for connecting the bell crank levers or rocker frames 13 and 14 together, said means preferably consistin of links 27 each embodying in its construction a rod 28 which is screw threaded at opposite ends, one of the threads being a right hand thread and the other a left hand thread. These screw threads engage bearing members 29, 29 pivotally attached to levers 13 and 14.

A hand wheel'30 is attached to each of the rods 28 and serves as a means for rotating the same to separate or contraet the portions of said bell crank levers connected by said link. Check nuts 31 serve to secure the rod 28 against rotation so as to maintain the rocker arms in their proper adjustment. One of the arms of one of the bell crank levers, preferably the lever 13, is extended beyond the connection for the link 27 and supports, at this end, a pivoted nut 32 which is screw threaded to receive the screw threaded end 33 of a rod 34. This rod extends toward the front of the machine where it passes through the forked end 35 of a lever 36 pivoted at 37 between the frames 11 and 12. The lever 36 has two depending arms 38 and 39, one of these, preferably the arm 38. terminating in a treadle 40.

Mounted between and pivotally connected with the arms 38 and 39 is a link 41. The link 41 extends toward the front of the machine and pivotally engages at 42 a link 43 substantially equal in length to the link 41, but the link 43 is pivoted at 44 to the frame 12. A treadle 45 is connected with the link 43 and constitutes tripping means for the toggle, comprising the links 41 and 43. The portions of the links 41 and 43 adjacent to the pivot 42 are, enlarged at 46 to form weights which cause said toggle to move downwardly, when the treadle '40 is depressed, and straightened, the enlarged portions 46 being arranged to engage a' stop 47 on the base 10 which is of suitable height having screw threaded engagement with 7 said rod and being arranged to be rotated rotated to vary its relation to the pivoted nut 32 and also the relation between said nut and the forked end 35 of the lever 36. The work, which is attached in anysuitable manner to the surface 25 ofthe work support is adapted to be acted upon by its work member preferably consisting of a cylindrical bar 55 constructed of glass, agate or other suitable material, said bar being preferably equal in length to the width of the work support and arranged to be reciprocated longitudinally of the work support in a substantially straight path lying nearly parallel with the face of said work support.

To accomplish this movement said work member is mounted in a head 56 and the head, in turn, is fastened to the end of a connecting rod 57 engaging a crank pin 58 on one of the cranks 5 and 6. The head 56 is furthermore pivotally connected at 59 to the lower end of a floating beam 60 which, at its upper end, is pivotally connected with a forked link 61 adapted to rock upon a shaft 62 secured to the frames 8 and 9.

The floating beam 60 is also pivotally connected substantially midway of its ends to a second link 63, said second link being forked at 64 to straddle a forwardly projecting arm 65 on the frame. The arrangement of the links 61 and 63 is such that when mo tion is imparted to the floating beam 60 by the crank pin 58 the work member 55 will travel substantially parallel with the surface 25 of the work support.

It is essential to the successful operation of the machine that the work member be provided with a suitable cushioning means which permits the work member to yield slightly when it engages the work and to compensate for slight variation in the thickness of the work. This means is preferably formed in the head 56 and consists of a pivoted work member holder 65 arranged within a recess 66 formed in the head'56. The member 65' is pivoted at 67.

A projection 68 on the member 65' is adapted to engage a ledge 69 formed adjacent to the lower portion of the head 56 and limits the downward movement of said work member holder. The holder 65 is furthermorerecessed at 70 to receive a plurality of layers of disks of resilient material. preferably rubber 71, which alternate with metal disks 72. A metal disk '7 3 is'pla-r'ed over the resilient disks and is engaged by a set screw 74 adjustably mounted in the upper wall of the head 56. By means of this screw the amount that the work member will'move under pressure thereagainst may be regulated; The work member holder is provided with a pair ofaws consisting of a fixed member v75 and a detachable-member 76 which, together, contain slightly more than half the cylindrical work member 55 and thus securely hold the same during the operation of the machine.

The two sections of the machine, although operated from the same driving shaft 7 by means of the same driving pulley, may be independently connected with said shaft by clutches 77 and '78 adapted to be operated by levers 7 9 and 80 so that the elements of the machine may be operated at will. These clutches are arranged between the frames 8 and 9 and also arranged between said frames are two pulleys, a tight pulley 81 and a loose pulley 82.

A belt shifter 83 is adapted to be operated by a shifting lever 84 to move the belt from the tight pulley to the loose pulley and vice versa. The operation of the machine hereinbefore specifically described is as follows:

The work is placed upon the face 25 of the work support as represented at A. The work member is reciprocated over the surface of the work by the crank, including the crank pin 58 and the work is moved so as to be engaged by said work member by elevating the work support through the instrumentalities of treadle 40 which, upon depression, moves the rods 34 in the direction of the arrow (4, Fig. 3, and through the levers 13 and 14 and link 28 causes the arms engaging the brackets 19 to be moved upwardly.

The normal position of the work support is substantially parallel with the path of movement of the work member 55 andv this is slightly inclined. The complete depression of the treadle 40 helps in the straightening of the toggle, consisting of the links 41 and 43, thereby locking said treadle in its lowermost position and at the same time looking the support in its position against the work member.

To adjust the angle of the work support transversely of the path of movement of the work member the screws 24 are employed, which by raising one and lowering the other, will rock the support upon the pivots 21 the exact amount desired and hold said support in the adjusted position. The work support will be yieldingly maintained in its operative position by means of the spring 52 which may be adjusted so as to vary the tension thereof. The angle of said work support longitudinally of the path of movement of the work member may be varied by the rotation of the hand wheel 30 in one direction or the other or by means of the hand wheel 54.

If the forward end of the work support is to be raised or lowered the hand wheel 30 is employed while the rear end of the work support is raised or lowered by the cooperative action of said hand wheel 30 and hand wheel 54. By means of these adjustments a limited universal adjustment of the work support may be secured. After the work has been operated upon for a sufficient length of time the treadle 45 may be depressed to trip the toggle and permit the treadle 40 to move upwardly, thus lowering the table from the path of movement of the work member.

Having thus specifically described my invention what I claim and desire by Letters Patent to secure is:-

1. A glazing machine having, in combination, a work support, a pair of rocker frames arranged to rock about parallelly disposed axes disposed transversely of said work support, means for connecting said rocker frames together, shafts constituting pivots for fastening each of said rocker frames to the adjacent end of said work support, the axes of said pivots being substantially parallel with the surface of said work support and at right angles to the axes of said rocker frames, means for rocking said work support about said pivots, and means connected with one of said rocker frames adapted to operate the same to raise and lower said work support.

2. A glazing machine having, in combination, a work support, a pair of bell crank levers pivotally attached adjacent to opposite ends of said support, means for connecting said bell crank levers together, a treadle, an adjustable rod connecting said treadle with one of said bell crank levers, and a toggle connected with said treadle adapted to be straightened by the depression of said treadle and to prevent the return of said treadle'to its normal position.

3. A glazing machine having, in combi-' nation, a work support, a pair of bell crank levers pivotally attached adjacent to opposite ends of said support, means for connecting said bell crank levers together, a treadle, an adjustable rod connecting. said treadle with one of said bell crank levers, a toggle connected with said treadle adapted to be straightened by the depression of said treadle and to prevent the return of said treadle to its normal position, and means to trip said toggle.

' 4. A glazing machine having, in combination, a work support, a pair of hell crank levers pivotally attached adjacent to said support, means for connecting said bell crank levers together, a treadle, an adjustble rod connecting said treadle with one of said bell crank levers, a hand wheel having screw-threaded. engagement with said rod, a spring surrounding said rod and interposed between said hand wheel and said treadle, and a toggle actuated by the depression of said treadle adapted to lock said treadle in its depressed position.

5. A glazing machine having, in combination, a work support, a pair of bell crank levers pivotally attached'adjacent to opposite ends of said support, means for connecting said bell crank levers together, a treadle, an adjustable rod connecting said treadle with one of said bell crank levers,

to be straightened by the depression of said treadle and to prevent the return of said treadle to its normal position, and a treadle attached to one of the links constituting said toggle adapted to be operated to trip said toggle.

6. In a glazing machine, a work support, a pair of rocker frames arranged adjacent to opposite ends of said work support to rock' about parallel axes disposed transversely of said work support, brackets interposed between said rocker frames and said work support, said brackets being pivotedto rock upon said rocker frames about axes disposed parallel with the axes of said rocker frames, said brackets being also pivotally fastened to said Work support by shafts having axes arranged parallel with the surface of said Work support and extending longitudinally of said work support, and screws extending through said brackets and engaging said Work support upon opposite sides of said shafts and adapted to rock said work support about said last named axes.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WALTER R. SOPER.

Witnesses SYDNEY E. TAFT, HATTIE E. STRATTON. 

